import React, { useEffect, useState,useRef } from 'react';
import ThreePanel from './ContentCover'

export default function ContentBox() {

return (
<div style={{ width: '100%', height: '800px' }}>
    <ThreePanel>
        <div>左左左<span>2222</span></div>

        <div>右右右右右3333</div>
    </ThreePanel>
</div>
)
}
